ASTROSAT CZTI

Data Quality Report

Orbit 18814

Creation date: 2024-06-27T17:55:10.893850
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_173T01_9000002812_18814cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18814cztM0_level2_quad_clean.evt
Size (bytes)465,978,24097,790,400
Size444.4 MB 93.3 MB
Events in quadrant A3,237,098639,171
Events in quadrant B3,353,368653,994
Events in quadrant C3,543,603611,460
Events in quadrant D3,527,753594,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137031
B0140311
C0146241
D0147601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6623160.241582%
B6624230.347222%
C66241181.781401%
D6624751.132246%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7798 6624 0 0 0.00% 0.00%
B 7799 6625 2 2 0.03% 0.03%
C 7799 6625 42 42 0.54% 0.63%
D 7799 6625 79 79 1.01% 1.19%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 4 27078 156.18 831 815 168.2
A 13 254 11195 61.73 831 815 168.2
A 0 226 7301 38.57 831 815 168.2
B 4 216 18950 114.72 834 816 158.1
B 12 111 17987 108.63 834 816 158.1
B 0 198 15685 94.07 834 816 158.1
C 3 233 175750 950.85 790 797 184.0
C 9 54 161890 875.52 790 797 184.0
C 14 238 125106 675.61 790 797 184.0
D 12 110 372057 1893.41 797 773 196.1
D 7 223 70325 354.69 797 773 196.1
D 7 38 55723 280.22 797 773 196.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter